• Today

    Sep 2

    91°Lo 67°

    A p.m. t-storm in spots

    Fair for lawn mowing
    • Hours of Precip
      2
    • Precip
      45%
    • Hi
      RealFeel
      98°
    more
  • Wed

    Sep 3

    87°Lo 66°

    Clouds yielding to sun

    Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      7%
    • Hi
      RealFeel
      92°
  • Thu

    Sep 4

    88°Lo 68°

    Fog in the a.m.; partly sunny

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      25%
    • Hi
      RealFeel
      93°
    more
  • Fri

    Sep 5

    89°Lo 70°

    Partly sunny and humid

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      25%
    • Hi
      RealFeel
      94°
    more
  • Sat

    Sep 6

    90°Lo 64°

    A couple of p.m. t-storms

    Good for lawn mowing
    • Hours of Precip
      4
    • Precip
      64%
    • Hi
      RealFeel
      96°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 69° 70° 73° 76° 80° 83° 84° 85°
RealFeel® 69° 71° 76° 81° 87° 92° 92° 92°
Humidity 91% 87% 80% 72% 64% 57% 52% 48%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
13%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 3 NW 2 NNW 3 NNW 4 NNW 4 NNW 4 NW 4 NW 3 WNW
UV Index 0 1 2 3 5 6 6 6
Cloud Cover 76% 71% 58% 39% 25% 21% 26% 25%
Dew Point 66° 66° 67° 66° 67° 66° 65° 64°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2013
High 87° 84° 98° (1953) 87°
Low 66° 67° 48° (1909) 70°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 12:57 of sunlight, then sets at 7:36 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:14 PM with 10:16 of moolight, then sets at 1:30 AM

Top Story

Rockville Weather Report

DC: Warm Week for Back to School, Work

September 2, 2014; 12:55 PM ET

While temperatures and humidity levels will fluctuate slightly from day to day this week, unseasonable warmth will continue into next weekend around Washington, D.C. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Wed. Overnight Freeze

Wed. Degree Days

Wed. Evapotranspiration